Assighos to william h



J. F. OCONNOH.

FHICTION DRAFT RIGGING. APPLICATION FIL-ED ABR. 21. 1918.

.iin ii lmnn'il that' ze, imm of il'iiei wi-tical, lungh linlil lil-wifi uml n, lli-Minimi iiiinfemtinn lm'u'wen tlm lim vieil in* fili@ Mami) if mi?. i,

'ln 'min lilie :lii'nn Shop Lnezmsf alle @nai-if5 l vnipiny ii "m'liciil misi yolm @Minelli 2l limb ini llin inni" mul limi-noi: Skil/UML indimiiel nl in iwceivv tlm iiejr if( so inzit said yolm ill in pim'unlni imm loni'h foiwmd :mul Tenn-JINI* wlmi nmvmmnh flgt its m'wnid emi, tild/ )mlm 525i i@A lkn'mil with :i hollow "fclbangulm lumi final luis lippen and lnwm' transw "only amending simnlilis 23 agziinsi: n'liiffii nninn lllv benin ihn i'irunl; cmiilvined i355 ii'oilnni and wilge Q4. lit will lci Romiti that; the side walls 25-25 of the bonded and wif lglie yolin El am spiced apart snicieniiy in permit ilpw ln ation of til@ linls i8 Wii1li in ille hond :so that flu: laiiaei: are", blrfiuglin im close m )the sides of the rlifaw loai and illms n1inlinlizily blending strains inpcisefl upon the cnuplni ljgf l5.

Vlfiihin the jullie 2l, at its rem nml; is; iii-(nidad :i ivalfvfollnwei lfiiiviiig ai transl wis-i www; i?? in acci'mfimmimz. ille limi: mnt-ally xtunding; rem* cnnnnctingg Sciions l '26% nil" ilu: Simp i9 s@ limi ihn ifnllowai 2@ will lon pulled inrwmdiy upon (linfa mow .mont nii. lli@ cllzuv bzw. im'

fllie friction elements inluclc iii@ said inllnn'niwedge. block 2%-, corresponding mi )il mi'. 36? in i'mruir hlm key 1.6, this slot 3G lining' sn flcfsigjnnl im t0 prevent llativeI ninviiinnnt liiwuun ille blnck Bl and key 16. lil-Invii nl" ille wnibineil follower Wedge blocks.

nml il@ is prmfileii with side plates il?" l ziimnngml to overlap the adjacent ends nii i'lw, liiici'iml @linnn ,3U-30 and hold the latini against lnivial -displacelnonh Said Walla 3i' will milan perform u similar funcu limi with i'nspii zn lili: block 81, mi clmuly ngipnmsfrom :in inspnction of Fig. 2.

line @pnl-@Mini il; is follows: lilpu'n. in "smifil mi "nimmt of illu draw bili, ille follfinm: Wiaflig lilocli will be 'ioicnil mm'- lllllil wardly and due to the resistance of the spring 38 to rearward movement of the follower wedge block 29, there will be a tendency to squeeze or compress the friction shoes toward each other, thus augment` ing the friction generated between the slices 3() and block 31 inasmuch as the latter is prevented against rearward movement by the key 16. Itwill, of course, be understood that the rear follower 26 is held against rearward movement by the filler section of the yoke 21, the yoke 21 beingheld stationary by the key 17 -as beforef described. In draft, the follower wedge block 24 will be held stationary by the shoulders 23 of the yoke 21. As the rear follower 26 is moved forwardly through the yoke consisting of the links 18 and strap 19, it is evident that the spring 38 will be compressed and the wedging or squeezing action on the shoes 30 will be correspondingly increased. During the draft movement of the draw bar, it is evidentl that the key 16 will slide the friction block 31 forwardly, thus generating friction between said block 31 and the shoes 30.

A saddle plate 39 may be employed to assist in supporting the parts, if desired.

With the arrangement above described, it is evident that all the friction elements may be manufactured in.. the form of comparatively cheap castings and I eliminate the use of the usual comparatively expensive stop castings while at the same time obtaining a friction gear of high capacity. Furthermore, with the arrangement of shoes 30-30 and block 31, I obtain a large frictional wearing area, thus promoting the life of the friction elements,

1. Ina friction draft rigging, the combination with a draw bar, yoke-acting means,

and rear and front stopacting means; of a spring; and friction devices, the latter including wedge elements and relatively slidable friction members, one of said wedge Ielements remaining stationary under draft and all of the wedge elements being movable in buff.

2. In a friction draft rigging, the combination with a draw bar and yoke-acting means; of front stop acting means, rear stop-acting means; a spring; and friction devices including a plurality of Wedge elements and relatively slidable friction blocks, said front stop-acting means preventing forward movement of one of the wedge elements; and a keyfor preventing rearward movement of one ot' said friction blocks.

3. In a friction draft rigging, the combination with a draw ybar and yoke-acting means; of friction devices including a pair of oppcsitely arranged wedge elements, a

pair of friction shoes interposed between the wedge elements, and a friction block interposed between theshoes and slidable with respect thereto; a spring; and front and rear stop-acting means.

4.' In a friction draft rigging, the combination with a draw bar and yoke-acting means; of friction devices including a pair of oppositely arranged wedge elements, a pairof friction shoes interposed between the Wedge elements, and a friction block interposed between the shoes and slidable with respect thereto; a spring; and front and rear stop acting means, said front stop acting means comprising a stationary yoke having shouldered engagement with one of the wedge elements.

5. In a friction draft rigging, the combination with shock absorbing means including a spring and a plurality of friction elements; of a draw bar; and yoke-actingmeans operatively connecting the draw bar and shock absorbing means, said yoke-acting means including a pair of links, an extension strap, and a key connecting said links and strap, said key extending through one of said friction elements and adapted to prevent said element from urearward nuovement.

6. In a friction draft rigging, the combination with draft sills and a transversely cxtending xed key mounted therein; of a stationary yoke held by said key, said yoke having front stop-acting shoulders; of a plurality of friction elements mounted within said yoke and one of which cooperates with said shoulders; a draw bar; a spring interposed between the rear of said friction elements and the rear of said yoke; and yoke-acting means operatively connected to the draw bar.

7. In a friction draft rigging, the combi-y nation with draft sills having a. stationary movement by said key, said yoke having front upper and lower transverselyextending shoulders; a spring mounted within said yoke; friction devices within said yoke and including a pair of oppositely arranged wedge blocks, a. pair of friction shoes and a friction block slidably mounted within the shoes, one of said wedge blocks cooperating with said shoulders; a draw bar; and horizontally arranged yoke-acting means connected to the "draw bar, said yoke-acting means including a. transverse key extending through the friction block and arranged to prevent rearward movement of the latter.

In witness that I claim the foregoing I have hereunto subscribed my name this 12th day of April, 1918.

JOHN F. OCONN-OR.

Vkey mounted thereon; of a yoke held against lll) 

